You will receive this little device (8 x 6 x 2 cm) with a brief manual in English, which is actually but only explains the pairing via Bluetooth and NFC. In addition there is a standard USB to mini USB cable and an audio cable. All existing connections and controls of the adapter are clearly visible on one of the pictures of Product description. The build quality of the audio adapter makes a very high-quality impression, the appearance is supported by the matte black paint, pleasantly discreet and unobtrusive. On the bottom there is a large rubberized surface that ensures a stable and non-slip stand.
I have the equipment now in use for a few days and am very happy with it. The use is very simple. The power supply to manufactures using the supplied USB cable or a commercially available charger. The adapter has no internal battery. After you connect either the local music system / boxes via the supplied audio cable or a cable with 3.5mm plugs (not supplied) with the Adapter..Zum Turning the adapter you have to press the pause button for a few seconds. until the blue LED flashes and signals readiness for operation. Then press for pairing via Bluetooth, the same button until the LED's blue and red flashing. The pairing is very straightforward and the connection is also very stable. Then it can already start with the listening to music.
The transmission quality and the sound of streamed music are very good. What I really like is the additional features of the small device. Here you can on the three attached to the front keys the music pause / start / soft make loud and skip to the previous or next song. In addition, the adapter has a phone function as known from mobile Bluetooth speakers. With the pause button you can answer and end a call and lead the conversation through the built-in micro-coupled cell phone. Works flawlessly.
Overall, you get here a great audio adapter with good processing and transmission quality with great amenities at a great price-performance ratio. Since you can not go far wrong actually. But there's me 5 star and a buy recommendation.